Vacuum pumps are generally used at room temperature not less than 5 C and at relative temperature not higher than 90%. The gas enters the high vacuum chamber from the intake nozzle. At first, the high and low vacuum chambers are filled with atmosphere, and both exhaust valves are opened for exhaust. With the process of pumping, the pressure decreases (i.e. the vacuum degree increases), the pressure of the high vacuum chamber is not enough to push the exhaust valve, and the gas enters the low vacuum chamber through the middle partition. At this time, the pressure is not enough to push the exhaust valve, but the low vacuum chamber enters a certain amount of oil to help push the exhaust valve open, and the gas is discharged accordingly. The exhaust gas is mixed with oil particles, which are filtered by oil screen to separate the oil. Only the gas is discharged outside the pump.
The oil in the oil seal chamber of the vacuum pump is supplied by the oil pool A through the hole in the front end plate. The oil in the low vacuum chamber is supplied by the oil pool A through the hole in the back end plate. After the pump is disassembled and assembled, there is a big air leakage, which may be the improper assembly of rubber parts and should be adjusted or replaced. Exhaust valve disc aging deformation, damage or screw loosening, there will be abnormal exhaust.
Rotary Piston Vacuum Pump
Dry Type Vacuum Pump
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